Introduction to the Chemisty of Life

Question 1

PH is a measure of

Answer 1

Hydrogen Ions

Question 2

PH between 0 and 7 is

Answer 2

Acid

Question 3

PH between 7 and 14 is

Answer 3

Alkaline

Question 4

Neutral Ph is

Answer 4

7

Question 5

Shifts away from physiological ph are prevented by

Answer 5

Buffers

Question 6

One important buffer that prevents ph from falling too low is

Answer 6

Biocarbonate ion

Question 7

When the ph of body fluid rises above 7.45 the condition of

Answer 7

Alkalosis exists

Question 8

The following defines the atomic weight of an atom

Answer 8

The total number of protons and neutrons

Question 9

A charged atom is known as

Answer 9

an Ion

Question 10

What is the difference between a molecule and a compound?

Answer 10

Atoms in a molecule may be identical but a compound has more than one type of atom

Question 11

Atom particles are not equally massive

Answer 11

Protons and neutrons have one mass unit each and electrons is negligible

Question 12

Single sugar unit

Answer 12

Monosaccharide

Question 13

Biological catalyst

Answer 13

Enzyme

Question 14

Contains an amino group and a variable side chain

Answer 14

Amino acid

Question 15

Molecules made of thousands of sugar units

Answer 15

Polysaccharide

Question 16

A building block of DNA

Answer 16

Nucleotide

Question 17

A dissacharide

Answer 17

Fructose

Question 18

A monosaccharide

Answer 18

Glucose

Question 19

A Polysaccharide

Answer 19

Starch

Question 20

The simplest amino acid

Answer 20

Glycine

Question 21

The energy currency of the body

Answer 21

Adenosine Triphosphate (ATP)

Question 22

Fat

Answer 22

Triglyceride

Question 23

Constiuent of cell membrane

Answer 23

Cholesterol

Question 24

A solution that is in osmotic equilibrium with body fluid is said to be

Answer 24

Isotonic

Question 25

A concentrated solution is

Answer 25

Hypertonic

Question 26

A less concentrated solution is

Answer 26

Hypotonic

Question 27

The total body water in an average adult is

Answer 27

60%

Question 28

A negatively charged subatomic particle that moves around the nucleus

Answer 28

is electron